KYROS 18SA compact full-range loudspeaker

KYROS 18SA

The Alpha Acoustics® KYROS 18SA is a high-output active subwoofer featuring an 18″ ferrite driver, delivering deep, clean bass with power and punch. Driven by a 1000 W RMS Class D amplifier ensures high SPL and reliable performance. Built from rugged birch plywood with a water-resistant coating, it is designed for durability in demanding environments. With onboard DSP and flexible mounting options, the KYROS 18SA integrates seamlessly into portable or fixed systems and pairs perfectly with the KYROS 12A for a complete full-range solution.

  • Rugged birch plywood cabinet with water-resistant coating
  • Rubber feet for stability and protection
  • Onboard DSP for precise control and easy setup
  • Flexible mounting options for portable and fixed installations
  • Perfect match with KYROS 12A for a full-range sound system

Specialties of Speaker

  • Transducer

    1 × 18″ LF

  • Power (RMS)

    1000 W

  • Max SPL

    130 dB

KYROS 18SA detail image
  • Design

    Ported

  • Frequency Response

    30 Hz – 120 Hz

  • Finish

    Black, Custom RAL colors

Specifications

Electroacoustic

  • DesignActive ported subwoofer
  • Transducer1 × 18″ LF
  • Frequency Response30 Hz - 120 Hz
  • Power (RMS)1000 W
  • Peak Power4000 W
  • AmplifierClass D
  • DSPBuilt in DSP with 24bit/48kHz AD/DA
  • Sensitivity100 dB
  • Maximum SPL130 dB
  • ConnectorsL (Mono)+R XLR-TRS Combo Input; L (Mono)+R XLR-Male Output; 1 × IEC power
  • ControlsInput Level, EQ Model, LPF selection, Polarity

Physical

  • ColorBlack and custom RAL colors
  • EnclosureMulti Layer Plywood
  • ProtectionBall-Proof
  • Dimensions (W×D×H)661 × 536.5 × 535 mm (W×D×H)
  • Net Weight31 kg

Downloads

Documents

Hear What KYROS 18SA Can Do

Engineered for deep, clean bass and built for real-world durability, KYROS 18SA brings power and punch to live events, rentals, venues, and fixed installs pair it with KYROS 12A for a complete full-range solution.

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Alpha Acoustics Speaker